Demotion
Demotion is a term for the forcible lowering of a crew member's rank. It is the opposite of promotion. This can be an autocratic decision by the crew's captain and/or senior officers, who can demote pirates of any rank below and including fleet officer without the captain's approval. It can also arise from a vote as per the other two political systems. The criteria for demotion varies between crews, and may be listed in that crew's private statement. For instance, some crews may choose to punish an officer, who has not restocked after using a vessel, by demoting them to the rank of pirate or cabin person.
Demotion can be accomplished by selecting the crew tab, right clicking on the pirate in question, and selecting "assign rank". A comment justifying this action can be made. This is visible (for the duration of the vote) to all the crew members who are elegible to vote on it according to the crew's political system.
Since each rank includes all the privileges of the previous rank, a demotion will not require a player to purchase a new badge (on doubloon oceans) or purchase another subscription (subscriber oceans).
Demotion can only reduce the rank of a player within that crew. A more drastic alternative to demotion is the expulsion of that pirate from the crew.